0.6-2.0 V, All-CMOS temperature sensor front-end using bulk-driven technology

Scott T. Block, Yiran Li, Yi Yang, Changzhi Li

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

An All-CMOS temperature sensor front-end is designed to work with a supply voltage range of 0.6 to 2.0 volts, and temperature range from 0 to 120°C. The flexibility of 0.6 to 2.0 volt operation was made possible by the use of a bulk-driven op amp. Using all CMOS allows for low voltage and smaller chip area. UMC 0.13μm technology was used for this design. This sensor produces three outputs, two voltages proportional to absolute temperature (PTAT), and one voltage independent of absolute temperature (IOAT). The temperature sensor front-end produces an approximate average reference voltage of 249mV with variation of ±0.7mV, a temperature coefficient of 18.2ppm/°C at VDD 0.6V to 19.2ppm/°C at VDD 2.0V, and a voltage coefficient of 290ppm/V at 0°C to 657ppm/V at 120°C. The design produces two linear PTAT voltages with approximate temperature sensitivity of 0.28mV/°C and 0.84mV/°C (Vtemp0 and Vtemp1 respectively) and voltage coefficients of 113.6ppm/V at 0°C, 450ppm/V at 120°C for Vtemp0 and 501.4ppm/V at 0°C, 1904ppm/V at 120°C for Vtemp1. The design has a simulated PSRR of 54dB at 100Hz and 0°C with a supply voltage of 0.6V.

Original languageEnglish
Title of host publicationProceedings of the 2010 IEEE Dallas Circuits and Systems Workshop
Subtitle of host publicationDesign Automation, Methodologies and Manufacturability, DCAS 2010
DOIs
StatePublished - 2010
Event2010 IEEE Dallas Circuits and Systems Workshop: Design Automation, Methodologies and Manufacturability, DCAS 2010 - Richardson, TX, United States
Duration: Oct 17 2010Oct 18 2010

Publication series

NameProceedings of the 2010 IEEE Dallas Circuits and Systems Workshop: Design Automation, Methodologies and Manufacturability, DCAS 2010

Conference

Conference2010 IEEE Dallas Circuits and Systems Workshop: Design Automation, Methodologies and Manufacturability, DCAS 2010
CountryUnited States
CityRichardson, TX
Period10/17/1010/18/10

Keywords

  • CMOS
  • independent of absolute temperature (IOAT)
  • low voltage
  • proportional to absolute temperature (PTAT)
  • reference voltage
  • sub-1 V operation
  • temperature sensor

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  • Cite this

    Block, S. T., Li, Y., Yang, Y., & Li, C. (2010). 0.6-2.0 V, All-CMOS temperature sensor front-end using bulk-driven technology. In Proceedings of the 2010 IEEE Dallas Circuits and Systems Workshop: Design Automation, Methodologies and Manufacturability, DCAS 2010 [5955038] (Proceedings of the 2010 IEEE Dallas Circuits and Systems Workshop: Design Automation, Methodologies and Manufacturability, DCAS 2010). https://doi.org/10.1109/DCAS.2010.5955038